We are currently hosting a referral contest. The contest is based on total amount of referrers you have after the contest is over. Once the contest is over, the user with the most amount of referrals will win. There will be 3 winners. This contest started on December 15 2014.

Note: There's also an award for the first 50 members of FK who joins SF. Just register and PM Dredd to receive it.
As for the HF members, first 50 to join will receive their own award too. Be fast as these are limited.